Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348670 | Phosphorous amine lubricant additives | Randolph A. McDonald | 1994-09-20 |
| 5194166 | Phosphorous amine lubricant additives | Randolph A. McDonald | 1993-03-16 |
| 5130036 | Phosphorous amine lubricant additives | Randolph A. McDonald | 1992-07-14 |
| 4965002 | Phosphite amine lubricant additives | William Brannen, Randolph A. McDonald | 1990-10-23 |